Using a gene-wide approach, Kwan et al. (142) genotyped 12 tagging and candidate SNPs of ABCB1 in 464 Chinese patients with epilepsy and revealed significant associations between drug resistance and the intronic polymorphism rs3789243, the coding polymorphism G2677T/A, and haplotypes containing two polymorphisms. Here, ABCB1 is linked to epilepsy.